Steam-generator.



0'. GRETORIS.

I STEAM GENERATOR. Y APPLIOATION IILI ID MAY 26. 1908.

Patented June 1, 1909.

2 SHEETs-SHEET 1.

' MTER 0. URETORS. STEAM GENERATOR. APPLICATION I'ILVPD MAY 25. 190B. 923,145, w Patented June 1, 1909.

2 SHEETS-SHEET "2.

"oI-I AnLEs ORETORS, or CHICAGO, ILLINOIS.

STEAM-GENERATOR.

men.

' To all whomit may mam.-

"Be it known that IQCIHARLES Cnnrons, a citizen of the United States of America, and a residento i Chicago, inthecounty of Cook and State oflllinois," have invented certain newfand useful Improvements in Steam Generators, of which the following is a specifiCLtlQIl. I I 7 This invent on relates to steam generators l and the'like, and of the coiled water tube type, and has forwits object to provide a simple, durable and economical structural formation and combination of p arts whereby a verylarge heating surface within a defined 1 ljarea is attained, all as will hereinafter more fully appear. j I

Inthe accompanying drawings: Figure 1,

y is a side elevation illustrating the general arrangement oi parts and with a series of four 2 0coils of heating tubes in place. Fig. 2, is a plan view with one coil ofthe heating tubes in place. 'Fig. 3, is a detail horizontal seci I tion on linex.rFig.l of one of the annular terminalheads or manifolds. Figs. 4 and 5 I 2 are companion detail sections on line r9c Fig. 2, illustrating the intermediate, connec tion between an upper and lower unit of the apparatus. I

Similarnumerals of reference indicate like parts in the several views.

Referring to the drawings, 1 represents a seriesof annular terminal heads or manifolds,

, and 2 an intermediate cylindrical shell arranged between a pair of said heads to im- .pose separated relation thereon to receive the ends of the series of coiled heating tubes hereinafterdescribedz And as so arranged the parts described will constitutea complete steam generating'unit, {of which a number 40 can be assembledtogether to afford a gener- "atorofithe required power of capacity. In

Fig. 1 of the drawings two of such units are shown comiected together to form the generator.

a 3 are the series ofheating tubes secured at will havea mainjspiral form and arrangement between the respective upper, and "lower terminal heads aforesaid, and each Specification of Letters Patent.

' j Application filed. May 25, 1908. Serial No. 434,755.

' Patented June 1, 1909.

tube is in turn iormed'bya series of circular loo s 4 to afiord a very extensive heating sur'ace in a given'space in the annular fire chamber in which they will be arranged in actual use.

At each end each coiled heating tube will have extensions 5 and 6, that are approximately radial to the axis of the annular terminal heads aforesaid when attached thereto.

When assembled to form a complete generator unit, the series of loops 4 aforesaid will lie closely together one above the other with each individual loop staggered or in vertical mis-alinement with the adjacent loop of its own tube and with the adjacent loops of the next adjacent heating tubes, as illustrated in Fi 1.

lhe manufacture of the special form of tube above described is readily and economically attained by first winding a section of tubing spirally upon a mandrel of the required diameter, after which the individual loops of the winding so formed are spread apart laterally to produce the main spiral or twist of the tube above described.

It is within the scope of the present invention to employ the present special form of heating tubes in connection with a central drum or boiler in lieu of the special form of tubes shown in my former patent No.'728,548, dated May 19, 1903; in my preferred construction however the following arrangement of parts will be employed.

7 are a series of'return or U shaped passages formed in the terminal heads aforesaid. Each of said passages has its end portions arranged radial to the axis or center of the terminal head andformed with screwthreaded counter bores and abutment shoulders 8, for the convenient attachment of the heating tubes as hereinafter described.

9 9 and 10 10 are inlet and outlet necks, respectively, arranged in adjacent relation on the uppermost terminal head of each generator unit aforesaid. Such necks are formed with ell shaped passages, which like the passages 7 above described, are formed with screw-threaded counter bores and inner abutment shoulders 8 as shown in Figs. 4 and 5. One end of the passage in an inlet neck 9 or 9 has connection with the first of the series of heating tubes of a generator unit, while the other end of such passage has connection with the water supply pipe 11 as indicated in Figs. 1 and 2. In like manner the passage in the outlet neck 10 or 10 has at one end connection with the last of the series of heating tubes of a generator unit, while at the other end said. passage has connection with the steam supply pipe 12 from the generator.

here tWo units are employed to form the generator, an example of which is used in the present drawings to illustrate the in vention, the water supply pipe 11 will be connected to the inlet neck 9. of the upper terminal head of the upper unit, and the steam supply pipe 12 to the outlet neck 10 of the upper terminal head of the lower unit. And in connection with such arrangement of parts, the outlet neck 10 of the up- 7 per terminal head of the upper unit will be connected to the inlet neck 9 of the upper terminal head of the lower unit by a goose neck tubular connection 13, as shown in Figs. 1 and 2.

By the described construction a sngle continuous heating passage is provided for the generation of the steam, such passage embracing the entire series of heating tubes 3 and return passages 7 by which the said tubes are connected in series.

ltare a series of screw-threaded nipples fitted over the attaching extensions 5 and 6 of the heating tubes and screwing into the aforesaid screw-threaded counterbores of the passages 7 in the terminal heads.

15 are rims or flanges on the ends of the attaching extensions 5 and 6 of the heating tubes, and against which the nipples 14 have bearing to force said flanges against the abutment shoulders 8, before described, and provide a substantial and steam tight attachment of the heating tubes in place.

The goose neck tubular connection 13, as well as the water and steam pipes 11 and 12, will be secured in a like manner and by similar means to the inlet and outlet necks 9 9 and 10 10 of the terminal heads.

While the present invention is shown and described as applied to a steam generator, it is evident that the same can be applied with equal advantage to steam or other condensers, radiators and the like, and the scope of the present invention is accordingly intended to embrace such applications of the present improved construction and arrangement of parts.

Having thus fully described my said invention what I claim as new and desire to secure by Letters Patent, is

1. In a steam generator or like appliance, the combination of an upper terminal head,

a lower terminal head, and a series of tubes N connected at top and bottom to said heads,

each tube consisting of a series of circular loops arranged in lateral misalinement to each other to impart a spiral form to the tube as a whole, the terminal heads having a series of U shaped passages connecting adjacent pairs of the heating tubes together,

substantially as set forth.

' 2. In a steam generator or like appliance, the combination of an upper terminal head, a lower terminal head, and a series of tubes connected at top and bottom to said heads, each tube consisting of aseries of circular loops arranged in lateral misalinement to each other and in like misalinement and in overlapping relation to the loops of the next adjacent tubes, the terminal heads having a series of U shaped passages connecting adj acent pairs of heating tubes together, substantially as set forth.

3. In a steam generator or like appliance, the combination of a pair of annular terminal heads formed with radial attaching bores, a series of tubes having radial extensions connected to said bores, each tube consisting of a series of circular loops arranged in lateral misalinement to each other to impart a spiral form to the tube as a whole, necks arranged on the inner sides of the annular terminal heads, and inlet and outlet pipes connected to said necks, substantially as set forth.

4. In a steam generator or like appliance, the combination of a pair of annular terminal heads formed with radial attaching bores, a series of tubes having radial extensions connected to said bores, each tube consisting of a series of circular loops arranged in lateral misalinement to each other and in like misalinement and in overlapping relation to the loops of the next adjacent tubes, necks arranged on the inner sides of the annular terminal heads, and inlet and outlet pipes connected to said necks, substantially as set forth.

5. In a steam generator or like appliance, the combination of an upper terminal head formed with inlet and outlet passages in adj acent relation and with a series of U shaped passages ada ted to connect adjacent pairs of heating tu es together, a lower terminal head having a series of U shaped passages adapted to connect adjacent pairs of heating tubes together, and a series of heating tubes connected at top and bottom to said heads, each tube consisting of a series of circular loops arranged in lateral misalinement to each other to impart a spiral form to the tube as a whole, substantially as set forth.

6. In a steam generator or like appliance, the combination of an upper terminal head formed with inlet and outlet passages in adjacent relation and with a series of U shaped passages adapted to connect adjacent pairs of heating tubes together, a lower terminal overlapping relation to the loops of the next I head having a series of U shaped assages adjacent tubes, substantially as set forth. 10

adapted to connect adjacent pairs 0" heating Signed at Chicago, Illinois, the 20th day tubes together, and aseries of heating tubes of May, 1908.

g 5 connected at top and bottom to said heads, CHARLES CRETORS.

I eachtubeconsisting of a series of circular Witnesses:

loops arranged 1n lateral mlsalinenient to ROBERT BURNS, each other and in like mlsahnernent and 1n HENRY MOE. 

